Nokia 1508i Troubleshooting Manual page 8

1508i(RM-430)
RF Description and Troubleshooting
Figure 6: Tx DC test point
Table 1 shows the Tx DC test points shown in Figure 6.
Test Point Description
1 PA_R1
2 PA_ON
3 Tx_on
4 Tx_pll
5 Tx_VccIQmod
6
TX_AGC
Tx IQ in
7
Tx_vccRFVGA 3.0V
8
2.16V for high gain mode,1.6V for low gain mode
3.08V for PA turning on, 0V for turning off
2.0 V
3.0V
3.0V
1.92V for 5dBm, 2.16V for 15dBm, 2.4V for 25dBm.
0.8 V With oscilloscope: 500 mV p-p
Table 1: Tx DC Test Points
Issue 1
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